I used to, actually. From 2006 to 2012 I smoked weed on and off. Sometimes I wouldn't smoke at all for a while, and then there would be times where I'd smoke every time I went out, several times in a row. And cigars/cigarettes/hookah at random times as well - though never regularly.
But outside of a few mess-ups (literally a few, like only twice that I can think of) I pretty much quit smoking of any kind,10 years ago from this year.
I don't know if I will never smoke weed ever again. It's just kind of been an indefinite hiatus, and the time has never felt right to go back, I haven't felt the need, and haven't been in the mood. But either way, I don't see myself going back to smoking anything with any regularity. Tobacco I'm pretty much going to avoid, unless there's something really special that I have to try once. Just not worth the health risk otherwise.
Beer on the other hand, I kind of miss - both the taste, and the buzz. I don't miss all the empty calories, though.